Which performance parameters of an electric motor determine its power consumption level? The energy efficiency of high-efficiency motors is undeniable!

For electrical equipment, power consumption is a crucial parameter determining the equipment’s energy usage level. A kilowatt-hour (kWh) is the unit of measurement for electrical energy, representing the energy consumed by a unit of power over one hour.

The output power of an electric motor is related to its rated voltage, rated current, and efficiency.  Even with the same power consumption, the corresponding output mechanical energy may not be the same, which involves the motor’s efficiency.

Some people believe that high-voltage motors consume less electricity because they have lower current. This is incorrect. The parameters that determine a motor’s power consumption are its power and operating time; the parameters that determine the motor’s power are the rated voltage and rated current. The current magnitude alone does not determine the motor’s power consumption.

For electric motor products, the percentage of output power relative to input power is the motor’s efficiency. Higher efficiency indicates that the motor has a stronger work capacity, meaning that it produces more useful work for the same amount of power consumed.